Catherine de Lange talks to experts on ageing, who explain why having good friends, lifting weights and learning languages can result in a longer and happier life
Does the idea that middle age now starts at 53 make it easier to cope with? And what does increasing longevity mean for us and the next generation? By David Stubbs and Liz Hoggard
Emma G Keller: Lauren Kessler spent a year investigating the ageing process and what – if anything – we can do to prevent it. She'll take your questions live today at 1pm ET
Emine Saner: Sant Kaur Bajwa died last week aged 115. She was one of a group of elite survivors known as the supercentenarians – people over 110. What are the secrets of their longevity?
Michiko Ono and Masaru Nishimori are both in their 80s, have never suffered a serious illness and deal with the Japanese capital's city heat better than their interviewer
Japanese people are more likely to reach 100 years old than anyone else in the world, a fact that some researchers attribute to their diet. So, are they right – and is eating tofu and squid the place to start?